Erowid References Database
“Effects of drugs on visually controlled behavior in pigeons”.
Psychotropic drugs. 1957;p110.
LSD substantially elevated the visual threshold of the pigeon. The pigeon's ability to perform a visual discrimination task (e.g. pecking an illuminated key but not a dark key) was improved by LSD but worsened by chlorpromazine. Both drugs reduced the rate of the pigeon's response. Pentobarbital impaired the accuracy of the pigeon and increased the response rate. The performance of a delayed discrimination task was worsened by chlorpromazine and pentobarbital. LSD caused a slight improvement that was not of statistical significance.
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